What Is a Merchant Account?
A merchant account is a specialist holding account that temporarily receives the funds from your customers’ card payments before transferring them to your main business bank account. It is not used for general banking. Every UK business that accepts credit or debit card payments — in person, online, or by phone — needs access to merchant account functionality, either through a dedicated account or a bundled payment service provider.
With around two-thirds of all UK payments now made by card, offering card acceptance is no longer optional for most businesses. But navigating merchant accounts — what they cost, who provides them, and how to choose — can be genuinely complicated. This guide gives you everything you need to make the right decision, without the jargon.
We cover: how card transactions actually work, UK-specific fees and regulations, a side-by-side comparison of the major providers, and what to watch out for before you sign anything.
- What Is a Merchant Account?
- How Card Transactions Flow Through a Merchant Account
- Do You Need a Dedicated Merchant Account — or an All-in-One Solution?
- UK Merchant Account Providers Compared
- What Does a Merchant Account Cost? Fees Explained
- A Worked Cost Example
- Steps to Get a Merchant Account for Your Small Business
- Merchant Account vs Payment Gateway vs All-in-One: Key Differences
- Minimising Risk: Chargebacks, PCI Compliance, and Settlements
- Real Scenarios: How Payment Setup Differs by Business Type
- Merchant Account FAQs
- Your Next Step: Choosing the Right Payment Setup
How Card Transactions Flow Through a Merchant Account
Every card payment you accept follows a fixed journey before the money appears in your bank account. Understanding this journey helps you spot delays, manage cash flow, and choose the right provider. There are three main phases.
1. Authorisation
When a customer pays by card — at the till, online, or over the phone — their card details are encrypted by your payment terminal or payment gateway and sent to your merchant acquirer. The acquirer checks with the relevant card scheme (Visa or Mastercard) and the customer’s issuing bank to confirm the funds exist and the card is valid.
For most online and remote payments, Strong Customer Authentication (SCA) applies under the Payment Services Regulations 2017, requiring the customer to verify using two of three factors: something they know (PIN or password), something they have (mobile phone), or something they are (fingerprint). Exemptions apply for low-value and low-risk transactions.
2. Capture and Clearing
Once you finalise the sale, your system instructs the acquirer to capture the payment. Transactions are typically batched at the end of each trading day, and the acquirer and card issuer exchange the details to clear the funds from the customer’s account.
3. Settlement
Cleared funds move from your merchant account to your business bank account. This typically takes one to three working days, though some providers — including Stripe and Square — offer next-day or same-day settlement via UK Faster Payments. Settlement timing is one of the most important factors to compare when choosing a provider, as delays directly affect your working capital.
Cash Flow
Settlement delays of 2–3 days can tie up significant cash if you have high daily card turnover. Always confirm the settlement schedule in writing before signing up — and check whether faster settlement carries an additional fee.
Do You Need a Dedicated Merchant Account — or an All-in-One Solution?
Whether you need a dedicated merchant account or an all-in-one payment service depends on your card turnover, sales channels, and appetite for admin. Getting this wrong can mean higher fees, slower settlements, or a contract you struggle to exit.
Dedicated Merchant Account | All-in-One Provider (e.g. Square, SumUp, Stripe) | |
|---|---|---|
| Best for | Businesses processing £10,000+/month who want bespoke rates and faster access to funds | Startups, sole traders, and businesses with variable or lower turnover |
| Setup time | Days to weeks (underwriting required) | Minutes to hours — instant approval common |
| Pricing model | Negotiated rates + interchange pass-through | Flat-rate per transaction (e.g. 1.75%) |
| Settlement speed | 1–3 working days (some offer next-day) | 1–2 working days; may hold funds if unusual activity detected |
| Contract | 12–36 months typical; early termination fees | Usually rolling monthly; easier to exit |
| Control | High — direct acquirer relationship | Lower — pooled under provider master account |
| Risk of account freeze | Lower — dedicated underwriting | Higher — providers can freeze pooled accounts |
| PCI compliance | Your responsibility (SAQ required) | Largely managed by provider |
| Examples | Worldpay, Barclaycard, Dojo, Elavon, Lloyds Cardnet | Square, SumUp, Stripe, PayPal, Zettle |
If you are unsure, start with an all-in-one provider. Most small businesses find the simplicity and lower commitment worth the slightly higher per-transaction rate. As your monthly card turnover grows above roughly £10,000, the economics typically shift in favour of a dedicated account with negotiated rates.
UK Merchant Account Providers Compared
Below is a comparison of the major UK merchant account and payment service providers. Fees shown are indicative based on publicly available information as of February 2026; always request a personalised quote, as rates vary by turnover, sector, and card mix.
Dedicated Merchant Account Acquirers
| Provider | Typical Transaction Fee | Monthly Fee | Contract | Settlement | Best For | Learn More |
|---|---|---|---|---|---|---|
| Worldpay | From 0.75% + 2p (debit) 0.3% interchange + markup (credit) | £/mo varies by plan | 12–36 months | Next day available | High-volume retailers, hospitality | Visit Worldpay |
| Barclaycard Payments | Interchange + 0.3–0.5% markup | £/mo varies | 12–24 months | 1–3 days | Barclays bank customers; established SMEs | Visit Barclaycard Payments |
| Dojo | From 1.4% (Visa/MC debit) +0.3% credit | No monthly fee on some plans | Rolling monthly | Next day | Hospitality; fast settlement priority | Visit Dojo |
| Elavon | Custom — interchange + markup | Varies | 12–36 months | 1–3 days | Multi-location retailers; enterprise | Visit Elavon |
| Lloyds Cardnet | Custom — interchange + markup | From £15/mo | 12–36 months | 1–3 days | Lloyds bank customers; established businesses | Visit Lloyds Cardnet |
All-in-One Payment Service Providers
| Provider | Typical Transaction Fee | Monthly Fee | Contract | Settlement | Best For | Learn More |
|---|---|---|---|---|---|---|
| Square | 1.75% (in-person) 2.5% (online) | None (basic plan) | Rolling monthly | 1–2 days (next day paid add-on) | Retail, food & beverage, pop-ups | Visit Square |
| SumUp | 1.69% (card reader) 2.5% (online) | None | Rolling monthly | 1–3 days | Sole traders, market stalls, low volume | Visit SumUp |
| Stripe | 1.5% + 20p (UK cards) 2.5% + 20p (EU cards) | None | Rolling monthly | 2–7 days (standard) | Online businesses, developers, SaaS | Visit Stripe |
| PayPal/ Zettle | 1.75% (Zettle card reader) 2.99% PayPal checkout | None | Rolling monthly | 1–3 days | Online sellers; existing PayPal users | Visit PayPal |
| Revolut Business | From 0.8% + 2p | From £10 (basic) | Rolling monthly | Next day | Businesses already using Revolut banking | Visit Revolut Business |
Fees shown are indicative. The same provider can quote very different rates depending on your monthly turnover, business sector, and card mix (consumer debit vs corporate credit). Always get at least three quotes and ask each provider to show you the full fee schedule — not just the headline rate.
What Does a Merchant Account Cost? Fees Explained
The true cost of accepting card payments is made up of several layers. Many businesses focus only on the headline transaction rate and are later surprised by the additional charges. Here is every fee type you may encounter.
| Fee Type | What It Is | UK Regulatory Position |
|---|---|---|
| Interchange fee | Paid to the cardholder’s bank for each transaction. The single largest component of processing cost. | Capped by UK Interchange Fee Regulation: debit cards 0.2% (weighted average), consumer credit cards 0.3%. Commercial/corporate cards are uncapped. |
| Scheme fee | Paid to Visa or Mastercard for use of their network. Often expressed as a small % or fixed pence per transaction. | Not directly regulated; set by the card schemes. Has risen significantly since 2022 — a key area the Payment Systems Regulator monitors. |
| Acquirer markup | The acquiring bank or processor’s margin, on top of interchange and scheme fees. This is the negotiable element. | The PSR’s card-acquiring market review (2023–24) introduced transparency requirements and remedies to improve competition. |
| Minimum monthly service charge | If your processing fees in a given month fall below a minimum threshold, you pay the difference. | Common in dedicated merchant account contracts. Not present in most all-in-one provider pricing. |
| PCI compliance fee | Charged by some acquirers for administration of your PCI DSS compliance — either annual or monthly. | PCI DSS is a contractual requirement of the card schemes, not a statutory UK requirement. Some acquirers bundle compliance support; others charge separately. |
| Terminal hire/lease | If you rent rather than buy a card machine, you pay a monthly lease fee. | The PSR has capped the initial term of POS terminal leases at 18 months to prevent businesses being locked into long contracts. |
| Chargeback fee | An administrative charge levied each time a customer successfully disputes a payment. | Not regulated directly; typically £15–£25 per chargeback from UK acquirers. High chargeback rates trigger Visa/Mastercard monitoring programmes. |
| Early termination fee | Charged if you exit a fixed-term contract before the end date. | Governed by your contract terms. Payment Services Regulations 2017 and FCA oversight require clear disclosure of exit terms. |
| MOTO uplift | Mail order / telephone order transactions carry higher fraud risk and attract higher per-transaction rates. | Not specifically regulated but must be disclosed clearly in contract terms under PSRs 2017. |
A Worked Cost Example
To make these fees concrete, here is an illustrative example for a café processing £15,000 per month, with a typical UK consumer card mix (80% debit, 20% credit):
| Fee Component | Dedicated acquirer (Dojo, ~1.4% debit) | All-in-one (Square, 1.75% flat) |
|---|---|---|
| Transaction fees (debit, £12,000) | ~£168 | ~£210 |
| Transaction fees (credit, £3,000) | ~£45 (at 1.5%) | ~£52.50 |
| Monthly minimum fee | £0–£20 (plan dependent) | £0 |
| Terminal hire | £15–£25/mo | £0 (card reader purchased outright ~£149) |
| PCI compliance | £0–£5/mo | Included |
| Estimated Monthly Total | ~£228–£258 | ~£263 (excl. terminal cost) |
At this volume, the all-in-one and dedicated routes come out surprisingly close once terminal costs are factored in. The gap widens as turnover grows: at £30,000/month, a dedicated acquirer with negotiated rates typically saves £100–£200/month versus a flat-rate provider.
Steps to Get a Merchant Account for Your Small Business
Getting a dedicated merchant account involves a formal application and risk review. Being well prepared shortens the process and reduces the chance of delays or rejection.
- Check your eligibility. Acquirers assess your business sector, trading history, expected monthly card turnover, and creditworthiness. High-risk sectors (travel, subscription services, adult content) face more scrutiny and may be declined by mainstream acquirers.
- Gather your documents. You will typically need: proof of identity (passport or driving licence) for all directors and beneficial owners; Certificate of Incorporation and Companies House details (if a limited company); 3–6 months of business bank statements; a description of your business model and average transaction values; and previous merchant statements if you are switching providers.
- Compare providers and get quotes. Request quotes from at least three providers. Use the comparison tables above to shortlist. Ask each for their full fee schedule — not just the headline rate — and check settlement timings, PCI approach, and exit terms.
- Submit your application. Complete the provider’s online or paper application form. Ensure all details match your Companies House records exactly — mismatches are a common cause of delays.
- Pass credit and risk checks. The provider’s underwriting team will assess your application. They may request additional information. High-risk businesses or those with inconsistent trading patterns may be offered a rolling reserve — where a percentage of funds is held back to cover chargebacks.
- Review and sign your contract. Read every line of the contract before signing. Pay particular attention to: the contract term and any auto-renewal clauses; the early termination fee; the minimum monthly service charge; how the rolling reserve (if applicable) is structured and released; and how disputes and chargebacks are handled.
- Integrate and go live. Connect your merchant account to your card terminal (for in-person payments) or payment gateway (for online/MOTO payments). Complete your PCI DSS Self-Assessment Questionnaire (SAQ). Run test transactions before going live.
Merchant Account vs Payment Gateway vs All-in-One: Key Differences
These three terms are frequently confused. Each plays a different role in the payment process — and choosing the wrong combination can mean paying for functionality you do not need, or missing something essential.
| Feature | Merchant Account | Payment Gateway | All-in-One (e.g. Stripe, Square) |
|---|---|---|---|
| Primary function | Temporarily holds card payment funds before settlement | Encrypts and transmits card data for authorisation | Combines acquiring and gateway in one service |
| Holds funds? | Yes — holds funds during settlement window | No — passes data only; does not hold funds | Yes — under the provider’s master account |
| Needed for online? | Yes — but typically paired with a gateway | Yes — required for online and MOTO payments | Yes — gateway function is built in |
| Needed for in-store? | Yes — paired with a card terminal | Not typically — POS terminals handle encryption | Yes — providers supply card reader hardware |
| Who provides it? | Acquiring bank or authorised payment institution (e.g. Worldpay, Barclaycard) | Technology provider (e.g. Opayo, Adyen, Stripe Gateway) | End-to-end providers (Stripe, Square, SumUp) |
| Setup complexity | Higher — underwriting and contract required | Moderate — technical integration needed | Low — instant sign-up, plug-and-play |
| Fee structure | Interchange + scheme + acquirer markup | Monthly fee + per-transaction fee | Flat % per transaction; no interchange pass-through |
| Best for | Higher volume, bespoke needs, direct acquirer relationship | Online businesses needing a dedicated tech layer | Low-to-medium volume; simplicity a priority |
In most cases, a payment gateway alone does not replace a merchant account — it transmits card data but does not receive or settle funds. If you are using a standalone gateway, you still need a merchant facility (either dedicated or bundled) to complete the payment journey.
Minimising Risk: Chargebacks, PCI Compliance, and Settlements
Chargebacks
A chargeback occurs when a customer disputes a payment with their bank and the bank reverses it. You lose not only the transaction amount but also an administrative fee (typically £15–£25 per dispute with UK acquirers). If your chargeback rate exceeds Visa or Mastercard’s thresholds, your account enters a monitoring programme, which brings additional fees and, ultimately, the risk of your merchant agreement being terminated.
To reduce chargebacks: use clear, recognisable billing descriptors so customers recognise your business name on their statement; collect and retain proof of delivery for physical goods; implement 3D Secure (3DS2) for online transactions; respond promptly and with full documentation to every dispute.
PCI DSS Compliance
The Payment Card Industry Data Security Standard (PCI DSS) is a contractual requirement of the card schemes — Visa and Mastercard — and applies to every business that stores, processes, or transmits cardholder data. Failure to comply can result in additional monthly fees from your acquirer (typically £10–£30) and, in serious cases, suspension of your ability to accept cards.
Most small businesses complete a Self-Assessment Questionnaire (SAQ) — a checklist aligned to your specific transaction environment — rather than a full audit. All-in-one providers typically handle most of the compliance burden for you. With a dedicated merchant account, responsibility sits with your business.
Settlement Delays and Cash Flow
Funds from card sales typically take one to three working days to reach your bank account. Some providers offer next-day settlement using UK Faster Payments — sometimes at an extra charge. If you process high daily volumes, even a single extra day in the settlement cycle can create a meaningful cash flow gap. Build this into your financial planning, and check whether your provider’s settlement timings can be adjusted as your relationship develops.
Real Scenarios: How Payment Setup Differs by Business Type
Scenario A: Independent café processing £12,000/month
A busy café taking payments primarily at the counter needs a physical card reader — ideally one that handles contactless, Apple Pay, and Google Pay. At a £12,000/month card turnover, a dedicated merchant account with a provider like Dojo (which offers next-day settlement and transparent pricing) is competitive with all-in-one options. Key priorities: fast settlement (important for daily float management), a card reader that works without internet drops, and a contract with a reasonable exit term. Rolling reserves are unlikely at this volume and sector. Expect to complete a SAQ-B or SAQ-B-IP PCI questionnaire.
Scenario B: Online craft shop turning over £3,000/month
A small online retailer with unpredictable monthly turnover is well served by an all-in-one provider such as Square Online, Stripe, or SumUp. The flat-rate pricing means costs are entirely variable — no minimum monthly charges eating into quiet months. A payment gateway is built into the all-in-one service, so no separate integration is needed. Main risks to watch: account freezes if revenue spikes suddenly (common with pop-up or viral moments), and Stripe’s longer standard settlement window of 2–7 days. Stripe’s paid Instant Payouts option can mitigate this if cash flow is tight.
Scenario C: Multi-site hospitality business processing £80,000/month
At this volume, a dedicated merchant account with a mainstream acquirer such as Worldpay, Barclaycard, or Elavon makes strong economic sense. The interchange-plus pricing model means you pay closer to the regulated interchange rate, and your acquirer markup becomes negotiable. Expect to engage a payment consultant or use a broker to compare quotes — the difference between providers at this scale can be £500–£1,000/month. Key contract terms to negotiate: next-day settlement at no additional cost, no rolling reserve, a 12-month rather than 36-month initial term, and a capped early termination fee.
Merchant Account FAQs
These are the questions we hear most often from UK small business owners setting up card payments for the first time.
Can I use a business bank account instead of a merchant account?
No. A standard business bank account cannot process card payments by itself. You need a merchant facility — either a dedicated merchant account or a bundled payment service provider — to accept and settle card transactions. The merchant facility temporarily holds funds during the settlement process before passing them to your bank account.
What is the difference between a merchant account and a business bank account?
A merchant account is a specialist holding account used exclusively to receive card payment funds during the settlement process. A business bank account is a full current account used for day-to-day banking. They serve different functions, and you typically need both: the merchant account handles the card transaction, then releases funds to your bank account once settlement is complete.
How much does a merchant account cost?
Costs vary significantly by provider and your business profile. As a rough guide, dedicated merchant account providers typically charge interchange plus a markup of 0.3–0.8%, plus a monthly fee of £10–£30 and any terminal hire costs. All-in-one providers charge a flat rate of 1.5–2.5% per transaction with no monthly fee. See the worked cost example above for a realistic monthly total.
How long does it take to get a merchant account?
All-in-one providers (Square, SumUp, Stripe) can approve you and have you taking payments in under an hour. Dedicated merchant accounts from acquirers like Worldpay or Barclaycard typically take 3–10 working days due to underwriting and document checks. High-risk businesses or those with incomplete documentation may take longer.
What happens if my merchant account application is refused?
You can ask the provider for specific feedback on the reason for refusal, correct any documentation issues, and apply again — either with the same provider or an alternative. If mainstream acquirers decline you due to sector risk, consider all-in-one providers, which generally have less restrictive underwriting criteria, or specialist high-risk merchant account providers.
What is a rolling reserve and should I be worried about it?
A rolling reserve is where your acquirer holds back a percentage of your daily card takings — typically 5–10% — for a fixed period (often 90–180 days) to cover potential chargebacks. It is most common for new businesses, high-risk sectors, and companies with inconsistent trading histories. It is not unusual, but it does tie up cash. Always negotiate the reserve percentage and release period before signing.
Do I need a merchant account for contactless and Apple Pay?
Yes. Contactless, Apple Pay, and Google Pay are all card-network-based payment methods. Accepting them requires a merchant account (or all-in-one service) and a compatible payment terminal, just as a standard chip-and-pin transaction does. The merchant account processes these payments in exactly the same way.
What is Open Banking, and will it replace merchant accounts?
Open Banking allows payments to be made directly from a customer’s bank account to yours, bypassing card networks entirely. Account-to-Account (A2A) payments and Variable Recurring Payments (VRPs) are growing in the UK, driven by the FCA and Payment Systems Regulator. For now, card payments remain dominant for most consumer purchases. However, businesses — particularly in e-commerce and subscription services — should watch this space, as Open Banking payments carry no interchange fee and could reduce processing costs significantly within the next 2–3 years.
What is PCI DSS, and do I have to comply?
PCI DSS (Payment Card Industry Data Security Standard) is a set of security requirements set by Visa and Mastercard that apply to every business handling card data. As a small business, you will almost certainly need to complete a Self-Assessment Questionnaire (SAQ) once a year — a checklist rather than a full audit. All-in-one providers manage most of the technical compliance burden for you. Non-compliance can result in monthly fines from your acquirer and, in serious cases, suspension of card acceptance.
Do I need a merchant account if I sell on a marketplace like Etsy or Amazon?
No. If all your sales go through a marketplace that processes payments on your behalf (Etsy, Amazon, eBay, Not On The High Street), you do not need a separate merchant account. The marketplace handles the entire payment process. You only need your own merchant account or payment provider when you are accepting payments directly on your own website, in your own premises, or over the phone.
Your Next Step: Choosing the Right Payment Setup
You now have everything you need to make an informed decision. Here is how to move from information to action within the next week.
- Assess your volume and channels. Estimate your monthly card turnover and identify whether you need in-person, online, or MOTO capabilities. Use this to shortlist two or three provider types from the comparison tables above.
- Shortlist three providers and request quotes. Ask each for a full fee schedule — not just the headline rate — and confirm settlement timings, PCI approach, and exit terms in writing.
- Read every line of any contract before signing. Focus on: contract term and auto-renewal; early termination fee; minimum monthly charges; rolling reserve terms; and chargeback process. The biggest mistake businesses make is focusing only on the transaction rate.
- Set a deadline. Aim to have your provider chosen and application submitted within seven days. Longer research cycles rarely produce better decisions — and every week without card acceptance is a week of potential lost sales.
